var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
// var cors=require("cors");
var cookieSession=require("cookie-session");
// var jwt=require("jsonwebtoken");
// var fs=require("fs");

const userRouter = require("./routes/users.js");

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
// app.use(cors());
app.use(cookieSession({
  name: 'session',
  keys: ['key1', 'key2']
}));

//配置路由
app.use("/api/users", userRouter);
//生成token
// app.get("/",(req,res,next)=>{
//   //对称加密
//   // let token=jwt.sign({username:"clearlove"},"i love you");//生成token
//   // let decoded=jwt.verify(token,"i love you");//验证
//   // res.send(decoded);
//   //非对称加密
//   let privateKey=fs.readFileSync(path.join(__dirname,"./keys/rsa_private_key.pem"));//私钥
//   let tk=jwt.sign({username:"clearlove"},privateKey,{ algorithm: 'RS256'});
//   let publicKey=fs.readFileSync(path.join(__dirname,"./keys/rsa_public_key.pem"));//公钥
//   let result=jwt.verify(tk,publicKey);
//   res.send(result);
// });

// catch 404 and forward to error handler
app.use(function (req, res, next) {
  next(createError(404));
});

// error handler
app.use(function (err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
